Windshield Wiper/Washer

Components and Component Location

Component Location

Windshield wiper and washer switch

Repair Procedures

Removal

1. 1

   Disconnect the negative (-) battery terminal.

2. 2

   Remove the steering wheel.

   (Refer to Steering System - "Steering Wheel")

3. 3

   Remove the upper and lower steering column covers after loosening the screws.

   (Refer to Body - "Steering Column Shroud Panel")

4. 4

   Remove the clockspring.

   (Refer to "Restraint System - Driver Airbag Module (DAB) and Clock Spring")

   

5. 5

   Disconnect the multifunction switch connector (A).

   

6. 6

   Remove the multifunction switch assembly (A) after loosening the screws.

   

Installation

1. 1

   Install the multifunction switch.

2. 2

   Install the clock spring.

3. 3

   Install the upper and lower steering column covers.

4. 4

   Install the steering wheel.

5. 5

   Connect the negative (-) battery terminal.

Inspection

Multifunction Switch Inspection

1. Check the circuit continuity between the terminals in each switch position, as shown below.

   

   [Left Hand Drive]

   Switch	Switch Position	Switch Terminal	Resistance (Ohm, ±3%)
   Front Wiper Switch	FOG	1-9	330
   	OFF		∞
   	Intermittent (AUTO)		800
   	LOW		1800
   	HIGH		5700

   
   

   [Right Hand Drive]

   Switch	Switch Position	Switch Terminal	Resistance (Ohm, ±3%)
   Front Wiper Switch	FOG	3-16	330
   	OFF		∞
   	Intermittent (AUTO)		800
   	LOW		1800
   	HIGH		5700

Inspection (with KDS)

1. 1

   In the body electrical system, faults can be quickly diagnosed using the Korean Diagnostic System (KDS).

   The Diagnostic System (KDS) provides the following information.

   1. Self-Diagnosis: Checks malfunction and Diagnostic Trouble Code (DTC)

   2. Current Data: Check the system input/output status.

   3. Actuation Test: Check the system operating status

   4. Additional function: Control of other functions, including the setting parameter system and zero point adjustment.

2. 2

   Select "Vehicle Model" and "Integrated Body Control Unit (IBU)" to inspect the vehicle using the tester.

3. 3

   Select the "Current Data" menu to view the current input/output data status.

Front Wiper Motor

Components and Component Location

Component Location

Repair Procedures

Removal

1. 1

   Disconnect the negative (-) battery terminal.

2. 2

   If necessary, release the wiper blade lock by pulling up, and remove the wiper blade from the inner radius (A) of the wiper arm.

   

3. 3

   Remove the upper hood cover.

   (Refer to Body - "Upper Cowl Cover")

4. 4

   Disconnect the wiper motor connector (A).

   

5. 5

   Remove the wiper motor and linkage (A) after loosening the bolts and nut.

   

6. 6

   While holding the wiper motor crank, remove the upper link (A).

   

7. 7

   Remove the lower link (A) from the wiper motor crank.

   

8. 8

   Remove the crank (B) after loosening the nut (A).

   

9. 9

   Remove the wiper motor (A) after loosening the mounting bolts.

   

   

Installation

1. 1

   Install the wiper motor.

2. 2

   Install the crank.

   Tightening torque: 14.7–19.6 N·m

3. 3

   Install the lower and upper links to the wiper motor crank.

4. 4

   Install the wiper motor and linkage assembly, then connect the wiper motor connector.

   Tightening torque: 6.9–10.8 N·m

5. 5

   Install the hood upper cover.

6. 6

   Install the windshield wiper arm and blade.

   Tightening torque: 22.5 - 26 N·m

7. 7

   Install the wiper arm and blade to the specified position.

   Auto stop position (blade)

   

Inspection

1. 1

   Remove the connector from the wiper motor.

   

   No.	Description
   1	-
   2	IGN2
   3	Wiper Motor (Park)
   4	Wiper Motor (High)
   5	Ground
   6	Wiper Motor (Low)

2. 2

   Connect the positive (+) battery cable to terminal 2, and the negative (-) cable to terminal 5.

   

   

Inspection (with KDS)

1. 1

   In the body electrical system, faults can be quickly diagnosed using the Korean Diagnostic System (KDS).

   The Diagnostic System (KDS) provides the following information.

   1. Self-Diagnosis: Checks malfunction and Diagnostic Trouble Code (DTC)

   2. Current Data: Check the system input/output status.

   3. Actuation Test: Check the system operating status

   4. Additional function: Control of other functions, including the setting parameter system and zero point adjustment.

2. 2

   Select "Vehicle Model" and "Integrated Body Control Unit (IBU)" to inspect the vehicle using the tester.

3. 3

   Select the "Current Data" menu to view the current input/output data status.

Front Washer Motor

Repair Procedures

Inspection

Front Washer Motor

1. 1

   After connecting the washer motor to the reservoir, fill the reservoir with washer fluid.

2. 2

   Connect the positive (+) battery cable to terminal 2, and the negative (-) battery cable to terminal 1, respectively.

3. 3

   Make sure the wiper motor operates normally, the washer motor operates, and water sprays from the front nozzles.

4. 4

   If abnormal, replace the washer motor.

   

Washer Fluid Level Sensor Switch

1. 1

   Disconnect the negative (-) battery terminal.

2. 2

   Drain less than 650 mL of washer fluid.

3. 3

   Check the continuity between terminals No. 1 and No. 2 in each float position.

   There should be continuity when the float is lowered.

   There should be no continuity when the float is raised.

4. 4

   If the continuity does not meet the specification, replace the washer fluid level switch.

   

   

5. 5

   If continuity does not meet the specification, replace the washer fluid level switch.

Removal

Front Washer Motor

1. 1

   Disconnect the negative (-) battery terminal.

2. 2

   Remove the engine room cover.

   D 2.2 R VGT (See Engine Mechanical System - Under Engine Room Cover)

   G 2.0 T-GDI THETA II (See Engine Mechanical System - Engine Room). Under Cover")

   G 3.3 T-GDI LAMBDA II (See Engine Mechanical System - Engine Room). Under Cover")

3. 3

   Remove the front wheel guard [RH].

   (Refer to Body - "Front Wheel Guard")

4. 4

   Drain the washer fluid to a level below 650 cc.

5. 5

   Disconnect the washer hose (A) and the washer motor connector (B).

6. 6

   Remove the front washer motor (C).

   

Washer Fluid Level Sensor Switch

1. 1

   Disconnect the negative (-) battery terminal.

2. 2

   Remove the engine room cover.

   D 2.2 R VGT (See Engine Mechanical System - Under Engine Room Cover)

   G 2.0 T-GDI THETA II (See Engine Mechanical System - Engine Room). Under Cover")

   G 3.3 T-GDI LAMBDA II (See Engine Mechanical System - Engine Room). Under Cover")

3. 3

   Remove the front wheel guard [RH].

   (Refer to Body - "Front Wheel Guard")

4. 4

   Drain the washer fluid to a level below 650 cc.

5. 5

   Remove the washer fluid level sensor switch (B) after disconnecting the connector (A).

   

Reservoir

1. 1

   Disconnect the negative (-) battery terminal.

2. 2

   Remove the front bumper assembly.

   (Refer to Body - "Front Bumper Assembly")

3. 3

   Remove the front wheel guard [RH].

   (Refer to Body - "Front Wheel Guard")

4. 4

   Drain the washer fluid to a level below 650 cc.

5. 5

   Disconnect the washer hoses (A) and the connector (B).

6. 6

   Remove the expansion tank (C) after loosening the bolts.

   

Installation

Front Washer Motor

1. 1

   If necessary, clean the washer motor filter.

2. 2

   Install the front washer motor.

3. 3

   Connect the front washer motor connector.

4. 4

   Install the front wheel guard [RH].

5. 5

   Install the engine compartment cover.

6. 6

   Connect the negative (-) battery terminal.

Washer Fluid Level Sensor Switch

1. 1

   If necessary, clean the washer motor filter.

2. 2

   Install the washer fluid level sensor switch.

3. 3

   Connect the connector of the washer fluid level sensor switch.

4. 4

   Install the front wheel guard [RH].

5. 5

   Install the engine compartment cover.

6. 6

   Connect the negative (-) battery terminal.

Reservoir

1. 1

   If necessary, clean the washer motor filter.

2. 2

   Install the expansion tank.

3. 3

   Install the washer motor hose and connectors.

4. 4

   Install the front wheel guard [RH].

5. 5

   Install the front bumper assembly.

6. 6

   Connect the negative (-) battery terminal.

Rain sensor

Components and Component Location

Components and Component Locations

Circuit Diagrams

Wiring Diagram

Description and Operation

Description

Integrated Rain Sensor

The integrated rain sensor (A) controls three systems: the front wiper, automatic lighting, and the central air conditioning.

1. 1

   Wiper Control System

   When the "AUTO" signal is received from the multifunction switch on the right, the integrated rain sensor detects the amount of rainfall. The sensor is installed inside the upper part of the windshield, near the engine control unit.

   This system automatically controls the operating duration and speed of the wiper based on the measured amount of rainfall, even if the driver does not operate the wiper switch.

2. 2

   Automatic Light Control System

   When the "AUTO" signal is received from the multifunction switch on the left, the integrated rain sensor installed on the windshield detects the light brightness and controls the headlights and the interior multimedia screen brightness.

   This system automatically adjusts the headlight and interior multimedia screen brightness based on the measured brightness, even if the driver does not press the lighting switch.

3. 3

   Central Air Conditioning System

   When the "AUTO" signal is received from the central air conditioning switch, the integrated rain sensor detects the amount of sunlight depending on the direction of sunlight.

   This system automatically controls the cooling system based on the measured amount of sunlight, even if the driver does not turn on the air conditioning switch.

   

Functions and Operation Principles

Basic Principle

1. 1

   Rainfall Detection

   Light (beam) emitted by the LEDs is fully reflected from the outer surface of the windshield and returns to the photodiodes. If there is water on the outer surface of the windshield, the light is optically separated and partially reflected, and the remaining brightness is measured by the photodiodes. Residual water on the windshield prevents the light from being fully reflected. The loss of brightness caused by this shows how wet the glass surface is.

2. 2

   Light Detection

   Light brightness is measured by the diodes using infrared light. The brightness outside the vehicle is measured in two directions: (a) upward direction and (b) forward direction. The measured amount of light is used to determine whether it is day or night.

3. 3

   Sunlight Amount Detection

   The system measures the amount of sunlight on the left and right sides and controls the air conditioning on the driver side or the passenger side.

Operation Control

1. 1

   When the "AUTO" signal is received from the multifunction switch on the right, the integrated rain sensor detects the amount of rainfall and controls the wiper motor.

2. 2

   When the "AUTO" signal is received from the multifunction switch on the left, the integrated rain sensor detects the brightness and controls the headlights and interior multimedia brightness.

3. 3

   When the "AUTO" signal is received from the central air conditioning switch, the integrated rain sensor detects the amount of sunlight and adjusts the air conditioning system.

Interference

The integrated rain sensor may malfunction due to the interference listed below.

1. 1

   Dust on the measuring surface and other surfaces in the beam path (surface of the LEDs and photodiodes, optical fiber, bracket, and the windshield joint surface of the glass) reduces the received light.

2. 2

   Movement of the windshield and bracket

3. 3

   Movement of the bracket due to vibration

4. 4

   Damaged wiper blade

5. 5

   Damaged Headlamp

6. 6

   Damaged Multimedia Device

7. 7

   Damaged Air Conditioning System

Automatic Operation

1. 1

   Rain Sensor Operating Condition

   Operation Mode	Operation
   Direct Mode	This is the normal operating state of the built-in rain sensor when the wiper switch is in the "AUTO" position and the sensor has detected a dry windshield. Based on this state, the built-in rain sensor determines the wiper operating mode according to the precipitation and its duration.
   Intermittent Mode	The built-in rain sensor activates intermittent mode when the wiper operates more than two times in succession with a pause of 0.5 - 5 seconds.
   Low speed	Wipers operate continuously at low speed
   High speed	Wipers operate continuously at high speed

2. 2

   Light Sensor Operating Condition

   Operation Mode	Operation
   Automatic Mode	This is the normal operating condition of the integrated rain sensor when the headlamp switch is in the "AUTO" position and the sensor has detected light brightness. Based on this condition, the integrated rain sensor determines the operating mode of the headlamps and integrated multimedia according to the amount of light measured.
   Low Beam On	The lamp and multimedia turn on at medium brightness.
   High Beam On	The lamp and multimedia turn on at maximum brightness.

3. 3

   Solar Load Sensor Operating Condition

   Operation Mode	Operation
   Automatic Mode	This is the normal operating condition of the integrated rain sensor when the A/C switch is in the "AUTO" position and the amount of sunlight is detected by the sensor. Based on this condition, the integrated rain sensor determines the operating mode of the A/C system according to the amount of sunlight.
   Manual Mode	Cooling intensity is adjusted manually.

High Safety Function

1. When ice or foreign material is present in the detection area, the integrated rain sensor cannot correctly recognize the operating conditions.

Special Condition Detection

1. 1

   Rain sensor

   Special Condition	Operation Based on Special Condition Detection
   Hesitation	When the built-in rain sensor detects a high level of water (spray) in direct or intermittent mode, the system switches from park mode to high speed. Then wiping is performed once at high speed and once more at low speed. If the precipitation condition does not change after wiping, it returns to the original state (direct or intermittent).
   Smearing	Smearing is a thin oil film that dries quickly and occurs when a small number of raindrops are wiped by a dirty or worn wiper blade. The operating signal must not be output when smearing occurs in continuous or intermittent mode.
   Mud	If no change is detected after wiping, the built-in rain sensor determines that the windshield is contaminated. In this condition, the operating signal should not be output. If the windshield becomes clean (for example, by washer fluid), the built-in rain sensor returns to normal.
   Automatic Day/Night Sensitivity Change	The integrated rain sensor automatically adjusts sensitivity between day and night using the day and night sensor.
   Ambient Light Level Compensation	The system operates normally by compensating for interference caused by surrounding lighting.
   Washer Fluid	The built-in rain sensor does not respond to washer fluid during washing mode. In other words, the wiping speed does not change even if washer fluid is sprayed (automatic operation of the washer pump does not affect the operation of the built-in rain sensor).

2. 2

   Light Sensor

   Special Condition	Driving in Special Conditions
   Pedestrian Overpasses / High-rise Buildings / Street Trees	The integrated rain sensor prevents the headlamps from flickering when it detects brightness while passing under overpasses, high-rise buildings, or street trees during the day. However, the headlamps may turn on when the sensor determines that it is nighttime while passing the above-mentioned locations.
   Tunnels	The integrated rain sensor recognizes a tunnel when the vehicle passes through it during the day. When entering a tunnel, the integrated rain sensor recognizes the tunnel and immediately turns on the headlamps, and turns them off a few seconds after exiting the tunnel.

Repair Procedures

Inspection

Checkpoint for the rain sensor:

1. 1

   To correctly adjust the sensitivity if automatic wiping operates too sensitively or not sensitively enough.

   

2. 2

   To check whether the sensor connector is connected properly.

   

3. 3

   To check whether the sensor and bracket are connected properly.

4. 4

   Check whether the sensor is contaminated with foreign substances (if the silicone gel pad of the rain sensor is contaminated with foreign substances, the rain sensor can be reused after removing them with a sticker roller.)

   

5. 5

   To check whether the silicone gel pad on the sensor is damaged.

   • If the damaged area of the silicone gel pad exceeds 1.5 mm (0.0591 in.), the ideal appearance and functionality are no longer guaranteed. Therefore, the silicone gel pad must be replaced.

     (Refer to Rain Sensor - Replacement)

   

Failure Mode

NO.	Symptom	Pattern	Status	NOTE
1	Rain sensor silicone gel pad damaged		- Automatic wiper does not operate intermittently	The automatic wiper does not activate due to a damaged area of the silicone gel pad.
2	Rain sensor silicone gel pad separated		- Automatic wiper does not operate intermittently	The automatic wiper does not activate due to a separated area of the silicone gel pad.
3	Rain sensor completely disconnected from the wiring connector		- Automatic wiper does not activate - DTC can be checked using the diagnostic tool	DTC related to LIN communication error occurs
4	Rain sensor not fully disconnected from the wiring connector		- Automatic wiper does not operate intermittently - DTC can be checked using the diagnostic tool	A DTC related to LIN communication error may occur if the automatic wiper does not activate.
5	Rain sensor clip not fully assembled to the bracket		- Automatic wiper does not activate	Automatic wiper does not operate intermittently due to a disconnected area from the windshield
6	LIN communication error	Rain sensor malfunction Communication error	- Automatic wiper does not activate - DTC can be checked using the diagnostic tool	DTC related to LIN communication error occurs or is caused by Case 3 or Case 4

Removal

1. 1

   Remove the mirror wiring cover (A).

   

   

2. 2

   Disconnect the rain sensor connector (A).

   

3. 3

   Be careful not to damage the cover latch by applying excessive force. To remove the bracket, pull the bracket holes outward using a small flat-head screwdriver (A).

   

   

4. 4

   The rain sensor module is attached to the windshield with adhesive. When replacing the windshield, remove the rain sensor module from the existing windshield and install it on the new windshield.

Installation

1. Install in the reverse order of removal.

Replacement

Gel Pad

1. 1

   Completely remove the damaged silicone gel pad from the rain sensor lens plate.

   

2. 2

   Remove the two protective films (A) from the gel pad.

   

3. 3

   Manually attach the silicone gel pad (A) to the rain sensor lens.